This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A091711 #11 Sep 08 2022 08:45:13
%S A091711 0,3,7,15,22,34,46,63,78,97,116,142,165,193,221,255,286,321,356,397,
%T A091711 435,479,526,574,620,672,723,781,836,896,956,1023,1086,1153,1220,1293,
%U A091711 1363,1439,1514,1597,1676,1758,1842,1931,2017,2113,2205,2302,2396
%N A091711 Exponent of 2 in (n^2)!.
%H A091711 Vincenzo Librandi, <a href="/A091711/b091711.txt">Table of n, a(n) for n = 1..200</a>
%t A091711 Table[IntegerExponent[(n^2)!,2],{n,50}] (* _Harvey P. Dale_, Nov 15 2018 *)
%o A091711 (PARI) a(n)=valuation((n*n)!,2)
%o A091711 (Magma) [Valuation(Factorial(n^2), 2): n in [1..50]]; // _Vincenzo Librandi_, May 16 2013
%Y A091711 Cf. A007814(A088020(n)).
%K A091711 nonn,easy
%O A091711 1,2
%A A091711 _Ralf Stephan_, Feb 09 2004